#VU104559 NULL pointer dereference in Linux kernel - CVE-2022-49323

Vulnerability identifier: #VU104559

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49323

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the arm_smmu_device_probe() function in drivers/iommu/arm/arm-smmu/arm-smmu.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/3660db29b0305f9a1d95979c7af0f5db6ea99f5d
https://git.kernel.org/stable/c/449fc4561762ad9ad85362d5f01f0d0df397457a
https://git.kernel.org/stable/c/80776a71340f57d6a4952635fc89f0342072f3ca
https://git.kernel.org/stable/c/98dd53a92825747395649f54d23512a13c3ed471
https://git.kernel.org/stable/c/d9ed8af1dee37f181096631fb03729ece98ba816

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.